The Mona Lisa or la Gioconda in the present era it is the most famous painting in the world. Its fame rests in particular on the elusive smile on the woman's face.Its mysterious quality brought about perhaps by the fact that the artist has subtly shadowed the corners of the mouth and eyes so that the exact nature of the smile cannot be determined. The shadowy quality for which the work is renowned came to be called sfumato or Leonardo's smoke. Vasari, who is generally thought to have known the painting only by repute, said that "the smile was so pleasing that it seemed divine rather than human; and those who saw it were amazed to find that it was as alive as the original. Is known as Portrait of a Lady with smile puzzle unknown that she would smile, laugh or cry. And when we moved the body in the way eyes of the Mona Lisa was still staring at me.